[hermitdev]

Caveat: I have not looked at the neither the API nor the implementation of Kreuzberg, this is purely from personal work.

Even with CPU bound code in Python, there are valid reasons to be using async code. Recognizing that the code is CPU bound, it is possible to use thread and/or process pools to achieve a certain level of parallelism in Python. Threading won't buy you much in Python, until 3.13t, due to the GIL. Even with 3.12+ (with the GIL enabled), it's possible (but not trivial) to use threading with sub interpreters (that have their own, separate GIL). See PEP 734 [0].

I'm currently investigating the use of sub interpreters on a project at work where I'm now CPU bound. I already use multiprocessing & async elsewhere, but I am curious if PEP 734 is easier/faster/slower or even feasible for me. I haven't gotten as far as to actually run any code to compare (I need to refactor my code a bit with the idea of splitting the work up a bit differently to account for being CPU instead of just IO bound).

[0] https://peps.python.org/pep-0734/

[impoppy]

Will it lock the GIL if you use thread executor with asyncio for a native c / ffi extension? If that’s the case, that would also add to benefits of asyncio.